A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 80 thousand miles and a standard deviation of 10 thousand miles. Compabelow.(...)The percentage of trucks that can be expected to travel either less than 60 or more than 95 thousand miles in a year is 8.96 %.(Round to two decimal places as needed.).c. How many miles will be traveled by at least 85% of the trucks?The number of miles that will be traveled by at least 85% of the trucks is 69636 miles.(Round to the nearest mile as needed.)d. What are your answers to parts (a) through (c) if the standard deviation is 8 thousand miles?If the standard deviation is 8 thousand miles, the proportion of trucks that can be expected to travel between 66 and 80 thousand miles in a year is(Round to four decimal places as needed.)If the standard deviation is 8 thousand miles, the percentage of trucks that can be expected to travel either less than 60 or more than 95 thousand miles in a year is %.(Round to two decimal places as needed.)miles.If the standard deviation is 8 thousand miles, the number of miles that will be traveled by at least 85% of the trucks is(Round to the nearest mile as needed.)Help me solve thisView an exampleGet more help.83°FJessType here to search& Given a normal distribution with μ = 100 and o= 10, complete parts (a) through (d).Click here to view page 1 of the cumulative standardized normal distribution table.Click here to view page 2 of the cumulative standardized normal distribution table....(Round to four decimal places as needed.)b. What is the probability that X < 75?The probability that X <75 is 0.0062.(Round to four decimal places as needed.)c. What is the probability that X<95 or X > 105?The probability that X < 95 or X> 105 is 0.6170(Round to four decimal places as needed.)d. 99% of the values are between what two X-values (symmetrically distributed around the mean)?99% of the values are greater than and less than(Round to two decima' ces as needed.)View instructor tip Help me solve thisGet more help -Type here to search

Answered: Image /qna-images/answer/e586ebe5-73fb-4fee-93e8-5e46b590c61e.jpg

Answered: If the standard deviation is 8 thousand…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Use the data 2, 3, 3, 6, 6, 7. Add 3 to each of the numbers. How does this affect the mean? How does this affect the standard deviation? Choose the correct answer below. .……. OA. Both of the mean and the standard deviation will be increased. OB. The standard deviation will be increased by 3, and the mean will remain the same. OC. Both of the mean and the standard deviation will remain the same. O D. The mean will be increased by 3, and the standard deviation will remain the same.
Note: The standard deviation is defined as the average distance of the class scores from the mean. Note: The variance is defined as average squared distance of the class scores from the mean. Sameer's score in a quiz was 25 and he was five standard deviations above the mean in this quiz. The mean was 20. The average squared distance of the scores from the mean in this quiz is: Select one: a. -3 b. 2 c. 3 d. -2 e. 1 f. -1
You are told that a set of data includes one score which is 0.8.The standard deviation for the set is 0. Can you give the mean of the set and say anything else about the six other scores in the set?
Suppose you have already calculated the mean, the average deviation, and the standard deviation of the weights in pounds of 20 third-graders. a. if these weights were converted to kilograms and the mean and the average deviation were once again calculated, would the second average deviation be (numerically) less than, greater than, or equal to the first average deviation? Explain your answer. b. If the standard deviation of these weights were calculated in kilograms, would it be (numerically) less than, greater than, or equal to the first standard deviation? Explain your answer
In a frequency distribution, the coefficient of skewness based on quartiles is 0.5. If the sum of the upper and lower quartiles is 28 and the median is 11, find the values of the upper and lower quartiles.
= 19 inches. Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake is u However, a survey reported that of a random sample of 51 fish caught, the mean length was x 18.6 inches, with estimated standard deviation s = 3.3 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is less than μ = 19 inches? Use a = 0.05. = (a) What is the level of significance? State the null and alternate hypotheses. O Ho: μ = 19 in; H₁: μ ‡ 19 in Ho: μ> 19 in; H₁: μ = 19 in O Ho: μ 19 in O Ho: μ = 19 in; H₁: μ 0.010 O 0.0010 < P-value < 0.010 O 0.250 < P-value < 0.0010 0.125 < P-value < 0.250 O P-value < 0.125 Sketch the sampling distribution and show the area corresponding to the P-value.
In some reports, the mean and coefficient of variation are given. For instance, one report gives the average number of physician visits by males per year. The average reported is 2.6, and the reported coefficient of variation is 2.3%. Use this information to determine the standard deviation of the annual number of visits to physicians made by males. (Round your answer to three decimal places.)

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